Patents by Inventor Dhruva Ramkumar

Dhruva Ramkumar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Aqueous mini-emulsions which are stable in storage and based on cholesteric mixtures
    Patent number: 7264748
    Abstract: A storage-stable aqueous miniemulsion whose disperse phase comprises a cholesteric mixture is prepared and is used for coating and printing on suitable substrates.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: September 4, 2007
    Assignee: BASF Aktiengesellschaft
    Inventors: Reinhold J. Leyrer, Dhruva Ramkumar, Holger Schoepke
  • Aqueous mini-emulsions which are stable in storage and based on cholesteric mixtures
    Publication number: 20050145829
    Abstract: A storage-stable aqueous miniemulsion whose disperse phase comprises a cholesteric mixture is prepared and is used for coating and printing on suitable substrates.
    Type: Application
    Filed: January 30, 2003
    Publication date: July 7, 2005
    Applicant: BASF Aktiengesellschaft
    Inventors: Reinhold Leyrer, Dhruva Ramkumar, Holger Schopke